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New rice 20

Release time:2016/2/27 23:48:37Hits(0)


Lin Yingchun Guo Lingling Huang Sheng

(the Tarim River in Xinjiang seed industry Limited by Share Ltd, Xinjiang in 843300)


New rice No. 20 (the original code 97-55-4) is Xinjiang Tarim River Seed Industry Co., Ltd. using artificial hybridization method, after years of breeding. February 2007 was approved by the Xinjiang Uygur Autonomous Region crop variety Approval Committee and named.

1 breeding process

Selection of fine quality and early maturing varieties Shangyu 397 as female parent, in late maturing lines 10-18 as male parent, in 1997 by artificial hybridization, when in the Hainan Island grown F1 generation. The 1998 planting F2, selected 78 superior plants planted in 1999, F3, select the superior individual, codenamed 97-55. The 2000 planting F4, codenamed 97-55-4. The 2001 planting F5, observation of the stability of the agronomic traits, it is considered that the strains seedling grows fast, heading neatly, mature, ripe stage right. 2002-2003, planting F6-F7 generation, with better integrated traits. In 2004 F8 into the strain test, the yield performance of the more prominent. 2005-2006 years in the autonomous region of ordinary rice regional test and the autonomous region of ordinary rice production demonstration test group.

The yield of 2

Comparative test: 2004 in Alar fine numerous field in strain comparison test, average per unit area yield 830.65kg / 667 square meters (a 1 mu, the same below), compared with the control, a rice No. 7 and Akita Komachi were increased by 10.8% and 15.4%, in the experimental group ranked first.

Regional test: 2005-2006 in the autonomous region of rice group of ordinary regional test, two years test average per unit area yield 800.29kg/667 square meters, Akita Komachi yield 10.58% than that of the control. The first production among the experimental groups.

Demonstration experiment: 2006 autonomous region of ordinary rice production demonstration test consists of four points, average per unit area yield 735.78kg/667 square meters, Akita Komachi increased by 1.2% than that of the control, output table is the second bit.

3 characteristics

The varieties of late maturing japonica rice. The whole growth period of about 148d (of which: seedling growth period was 147-154d, live stage 145-150d). Height 84-90cm, compact plant. The seedlings grow fast, deep green leaves and easy seedling, thick stem, flag leaf straight up. The growth period was stable orderly, mature and consistent. Cold resistant and strong lodging resistance. A semi curved panicle type, loose state. 16-17cm of panicle length, grain number per panicle of 100-120 grains, seed setting rate of 87-90%. The grain length oval shape, glume yellow, bromus. 24-25g 1000. The Ministry of agriculture, rice and rice products quality supervision, inspection and Testing Center (Hangzhou) rice quality analysis, the results are as follows: brown rice rate was 82.3%, milled rice rate of 74.4%, head milled rice rate of 64.8% and 4.8 mm grain length, length and width ratio 1.8, chalky rice rate of 14%, chalkiness 2.0%, level 1 transparency, alkali digestion value 7.0, straight chain starch content 15.7%, the gel consistency 63mm. Protein content of 7.9%.

4 high yield Cultivation Techniques

4.1 suitable areas

Southern Xinjiang, northern Changji, Yili Prefecture of Xinjiang production and Construction Corps on farms and plain rice, effective accumulated temperature is equal to or more than 10 DEG C in more than 3200 DEG C area planted, can normal mature.

4.2 time of sowing

A normal year in direct seeding cultivation and sowing date in late April to early May. Transplanting generally in early April the film seedling, 5 month transplanting, seedling age master in 30d as well. Northern sowing can be according to the actual situation appropriate early sowing.

4.3 reasonable density

According to the varieties of high germination rate, seedling characteristics, grasp the appropriate sowing rate, very important. Live field seeding rate is appropriate for 8-10kg/667 square meters, basic seedling is about 20 000 plants per 667 square meters, effective spike is 40 to 45 million per 667 square meters; in sowing and seedling amount for 6-8kg/667 square meters, the basic seedling was about 8 000 plants per 667 square meters, effective spike for 35 to 40 million per 667 square meters.

4.4 scientific fertilization

For shizujifei, every 667 square meters of organic fertilizer or fertilizer residue 800-1000kg 100-150kg, P 8kg. Early application of fertilizer after emergence into the two leaf stage Topdressing Urea 8kg/667 square meters 2kg/667 square meters of zinc fertilizer. Heavy tiller, tiller during the two times Topdressing Urea, each time the amount of 10kg/667 square meters. Skillfully panicle fertilizer late fertilization amount is decided according to the growth of the seedlings, under normal circumstances, 7-10 days before panicle differentiation, topdressing diammonium phosphate 3-5kg/667 square meters with the.

4.5 field management

After the emergence of the field, the seedling stage was required to pay attention to the 2-3D, and the seedlings were irrigated with shallow water to increase the soil temperature and promote the growth and development. Transplanting cultivation requires water transplanting, seedling, tillering in shallow water. Effective tillering stage appropriate field drying, into the summer high temperature, can be appropriate deepen water pumping period can not be short of water, the filling stage can take a dry wet dry wet intermittent irrigation and mature of 7-10 days without water. The whole growing period should be in the control of weeds and diseases and insect pests, to ensure the normal growth and development of rice.

4.6 harvest in time

The rice should be harvested in time, not only can reduce the loss of the field, but also can improve the quality of rice.


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